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SageMath
E = EllipticCurve("k1")
E.isogeny_class()
Elliptic curves in class 19950k
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
19950.m4 | 19950k1 | \([1, 1, 0, 75, -1875]\) | \(2924207/102144\) | \(-1596000000\) | \([2]\) | \(8192\) | \(0.44583\) | \(\Gamma_0(N)\)-optimal |
19950.m3 | 19950k2 | \([1, 1, 0, -1925, -31875]\) | \(50529889873/2547216\) | \(39800250000\) | \([2, 2]\) | \(16384\) | \(0.79241\) | |
19950.m1 | 19950k3 | \([1, 1, 0, -30425, -2055375]\) | \(199350693197713/547428\) | \(8553562500\) | \([2]\) | \(32768\) | \(1.1390\) | |
19950.m2 | 19950k4 | \([1, 1, 0, -5425, 111625]\) | \(1130389181713/295568028\) | \(4618250437500\) | \([2]\) | \(32768\) | \(1.1390\) |
Rank
sage: E.rank()
The elliptic curves in class 19950k have rank \(1\).
Complex multiplication
The elliptic curves in class 19950k do not have complex multiplication.Modular form 19950.2.a.k
sage: E.q_eigenform(10)
Isogeny matrix
sage: E.isogeny_class().matrix()
The \(i,j\) entry is the smallest degree of a cyclic isogeny between the \(i\)-th and \(j\)-th curve in the isogeny class, in the Cremona numbering.
\(\left(\begin{array}{rrrr} 1 & 2 & 4 & 4 \\ 2 & 1 & 2 & 2 \\ 4 & 2 & 1 & 4 \\ 4 & 2 & 4 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with Cremona labels.